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CVE-2025-37850— pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于pwm_mediatek_config函数未检查时钟频率返回值，可能导致除零错误。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.30% · P21

Possible ATT&CK Techniques 1 AI

T1562.001

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux caf065f8fd583b43a3f95d84c8a0a0d07597963b< 8b9f60725d74b72c238e4437c957d0217746b506 affected
caf065f8fd583b43a3f95d84c8a0a0d07597963b< e1206d8e1651c9f62e5640b69b14d925b1a0a00a affected
caf065f8fd583b43a3f95d84c8a0a0d07597963b< e3cf0c38d3ce754ad63005102fcfeb0b7ff3290b affected
caf065f8fd583b43a3f95d84c8a0a0d07597963b< f3e9cf266c2c103cf071e15d7a17e2c699fff3c5 affected
caf065f8fd583b43a3f95d84c8a0a0d07597963b< 8ddbec73ea2598d8414e8f7103241b55cf877010 affected
caf065f8fd583b43a3f95d84c8a0a0d07597963b< 4cb15042b5f3ec0474e91cf379120cc597625dbb affected
caf065f8fd583b43a3f95d84c8a0a0d07597963b< c343856ff2689ce0afef823592732fc178ef4aac affected
caf065f8fd583b43a3f95d84c8a0a0d07597963b< 77fb96dbe350e8a5ae4965ff9f6e7049f3966a6b affected
… +12 more rows
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I. Basic Information for CVE-2025-37850

Vulnerability Information
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Vulnerability Title
pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config() With CONFIG_COMPILE_TEST && !CONFIG_HAVE_CLK, pwm_mediatek_config() has a divide-by-zero in the following line: do_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm])); due to the fact that the !CONFIG_HAVE_CLK version of clk_get_rate() returns zero. This is presumably just a theoretical problem: COMPILE_TEST overrides the dependency on RALINK which would select COMMON_CLK. Regardless it's a good idea to check for the error explicitly to avoid divide-by-zero. Fixes the following warning: drivers/pwm/pwm-mediatek.o: warning: objtool: .text: unexpected end of section [ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于pwm_mediatek_config函数未检查时钟频率返回值，可能导致除零错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux caf065f8fd583b43a3f95d84c8a0a0d07597963b ~ 8b9f60725d74b72c238e4437c957d0217746b506 -
Linux Linux 4.12 -

II. Public POCs for CVE-2025-37850

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III. Intelligence Information for CVE-2025-37850

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Same Patch Batch · Linux · 2025-05-09 · 52 CVEs total

CVE-2025-37879 9.8 CRITICAL 9p/net: fix improper handling of bogus negative read/write replies
CVE-2025-37885 8.8 HIGH KVM: x86: Reset IRTE to host control if *new* route isn't postable
CVE-2025-37849 8.8 HIGH KVM: arm64: Tear down vGIC on failed vCPU creation
CVE-2025-37869 7.8 HIGH drm/xe: Use local fence in error path of xe_migrate_clear
CVE-2025-37886 7.8 HIGH pds_core: make wait_context part of q_info
CVE-2025-37856 7.8 HIGH btrfs: harden block_group::bg_list against list_del() races
CVE-2025-37845 7.8 HIGH tracing: fprobe events: Fix possible UAF on modules
CVE-2025-37882 7.8 HIGH usb: xhci: Fix isochronous Ring Underrun/Overrun event handling
CVE-2025-37861 7.8 HIGH scsi: mpi3mr: Synchronous access b/w reset and tm thread for reply queue
CVE-2025-37873 7.8 HIGH eth: bnxt: fix missing ring index trim on error path
CVE-2025-37854 7.8 HIGH drm/amdkfd: Fix mode1 reset crash issue
CVE-2025-37871 7.5 HIGH nfsd: decrease sc_count directly if fail to queue dl_recall
CVE-2025-37887 7.1 HIGH pds_core: handle unsupported PDS_CORE_CMD_FW_CONTROL result
CVE-2025-37876 7.0 HIGH netfs: Only create /proc/fs/netfs with CONFIG_PROC_FS
CVE-2025-37872 net: txgbe: fix memory leak in txgbe_probe() error path
CVE-2025-37888 net/mlx5: Fix null-ptr-deref in mlx5_create_{inner_,}ttc_table()
CVE-2025-37874 net: ngbe: fix memory leak in ngbe_probe() error path
CVE-2025-37878 perf/core: Fix WARN_ON(!ctx) in __free_event() for partial init
CVE-2025-37870 drm/amd/display: prevent hang on link training fail
CVE-2025-37868 drm/xe/userptr: fix notifier vs folio deadlock

Showing top 20 of 52 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37850

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